<template>
  <div class="app-container">
    <el-input v-model="filename" placeholder="Please enter the file name (default file)" style="width:300px;" prefix-icon="el-icon-document" />
    <el-button :loading="downloadLoading" style="margin-bottom:20px;" type="primary" icon="el-icon-document" @click="handleDownload">
      Export Zip
    </el-button>
    <el-table v-loading="listLoading" :data="list" element-loading-text="加载中" border fit highlight-current-row>
      <el-table-column align="center" label="ID" width="95">
        <template slot-scope="scope">
          {{ scope.$index }}
        </template>
      </el-table-column>
      <el-table-column label="name">
        <template slot-scope="scope">
          {{ scope.row.name }}
        </template>
      </el-table-column>
      <el-table-column label="Author" width="95" align="center">
        <template slot-scope="scope">
          <span>{{ scope.row.author }}</span>
        </template>
      </el-table-column>
      <el-table-column label="Readings" width="115" align="center">
        <template slot-scope="scope">
          {{ scope.row.pageviews }}
        </template>
      </el-table-column>
      <el-table-column align="center" label="Date" width="220">
        <template slot-scope="scope">
          <i class="el-icon-time" />
          <span>{{ scope.row.display_time }}</span>
        </template>
      </el-table-column>
    </el-table>
  </div>
</template>

<script>
  import { fetchList } from '@/api/product'

  export default {
    name: 'ExportZip',
    data() {
      return {
        list: null,
        listLoading: true,
        downloadLoading: false,
        filename: ''
      }
    },
    created() {
      this.fetchData()
    },
    methods: {
      async fetchData() {
        this.listLoading = true
        fetchList().then(result => {
          this.list =result.items;
          this.listLoading = false
        })

      },
      handleDownload() {
        this.downloadLoading = true
        import('@/vendor/Export2Zip').then(zip => {
          const tHeader = ['Id', 'Title', 'Author', 'Readings', 'Date']
          const filterVal = ['id', 'title', 'author', 'pageviews', 'display_time']
          const list = this.list
          const data = this.formatJson(filterVal, list)
          zip.export_txt_to_zip(tHeader, data, this.filename, this.filename)
          this.downloadLoading = false
        })
      },
      formatJson(filterVal, jsonData) {
        return jsonData.map(v => filterVal.map(j => v[j]))
      }
    }
  }
</script>
